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The Effects Of Notch Geometry On Fracture Testing Of Asphalt Concrete, Rebekah Porter
The Effects Of Notch Geometry On Fracture Testing Of Asphalt Concrete, Rebekah Porter
Civil Engineering Undergraduate Honors Theses
Asphalt concrete is commonly used as the surface layer on pavements because of its convenience, low cost, and smooth ride (Wagoner, 2005). However, there is a significant problem with the cracking and deterioration of asphalt concrete roads. The initiation of cracking in asphalt must be better understood in order to further improve pavement design. Fracture energy is the amount of energy needed to separate two surfaces. The semi circular bend (SCB) test can be used to measure the fracture energy of asphalt concrete. Currently, this method uses a semicircular specimen with a rectangular notch in a three-point bend compression test. …
Measuring Relative Humidity In Concrete Pavements As A Method To Assess Asr Mitigation Measures, Remington G. Reed
Measuring Relative Humidity In Concrete Pavements As A Method To Assess Asr Mitigation Measures, Remington G. Reed
Civil Engineering Undergraduate Honors Theses
Alkali-silica reaction (ASR) in concrete is partly facilitated by available moisture within the concrete. In order to better understand this facilitation and to develop processes for ASR mitigation methods, it is necessary to establish a means of monitoring internal relative humidity (RH) within the concrete. Current procedures for measuring RH are time consuming; requiring several hours of equilibration time and specific external conditions to yield accurate results. In order to better understand RH monitoring, laboratory tests were conducted using commercially available RH probes and different controlled environments. Probes were carefully monitored and calibrated in controlled environments, and laboratory tests on …
Validation Of An Internal Camera Based Volume Determination System For Triaxial Testing, Leah D. Miramontes
Validation Of An Internal Camera Based Volume Determination System For Triaxial Testing, Leah D. Miramontes
Civil Engineering Undergraduate Honors Theses
Accurate strain and volume measurements are critical to phase relationships and strength determination for saturated and unsaturated soils. In recent years, laboratory-based photographic techniques of monitoring soil specimens have become more common. These techniques have been used to reconstruct 3D models and to determine strain and volumetric changes of triaxial specimens. A new technique that utilized digital photographs of the soil specimen, captured from within a triaxial testing cell, was utilized. Photographs were processed using photogrammetry software to reconstruct 3D models of the soil specimens. By placing camera equipment within the cell, the technique eliminated the need to account for …
Analysis Of Bolted Beam-Column Connections With Multiple Bolts Per Row And Column Web Stiffeners, Benjamin C. Sutherland
Analysis Of Bolted Beam-Column Connections With Multiple Bolts Per Row And Column Web Stiffeners, Benjamin C. Sutherland
Civil Engineering Undergraduate Honors Theses
Bolted beam-column connections are a common moment connection used in the design of steel buildings. Existing design guides include design parameters for bolt configurations having one bolt on either side of the beam web for each row of bolts. There is potential for increasing connection strength by adding additional bolts on the outside of these rows. This addition could be useful in retrofit scenarios, or even in the design of new structures. In this research, finite element analysis is used to analyze various beam-column connections and t-stub connections. The modeling methods, research process, and conclusions are explained in the thesis …